While staying in Troyes, we went to see a bit of the Champagne area. Obviously, we had to check out the Champagne boulevard in Epernay, one of the most expensive places in the world due to the Champagne undergound caves. All major Champagne houses are here. Near Epernay there is also Hautevillers, considered the birthplace of the Champenoise method, as Dom Perignon was a monk here.